PCM tune or Tuner??
 

Hi, I'm new to this forum and this is my first post.

I have a 2005 Chevy Blazer ZR2 with a 4.3 V6. I have a CAI an a throttle body spacer. I also have had the 3rd CAT removed. From that point it runs into a Flow Master muffler and then goes out into two pipes. I'm interested in purchasing a programmer/tuner to optimize everything an also calibrate my speedo for my bigger tires. I've been told to not go with the "can" tunes but to get a custom tune. Now, I've been reading on here about programmed ECMs through wait 4 me performance.

Does anyone have any advice?

I use a JET Dynamic Spectrum Tuner. Used it to remove the governor, remove the torque management function, tweak the gas guage read out, adjust the tire size, did some shift point tweaks, and maybe a few other little things.

My advice... ...remove the TB spacer and use it for a door stop. Good luck.